hunting or defense in wildlife (or even dangerous jobs) in many countries are valid reasons to apply and get a permit.
Requiring permits would be an infringement on the right to bear arms. So assuming the amendment is faithfully interpreted (it usually isnt) by current law that would require a new constitutional amendment.
That aside the issue with permits are many fold, but most importantly is they can put gun owners at legal risk since they allow police to search for everyone with a gun and then target people simply for owning a gun.. This is something we already see constantly (people being stopped for having a gun on them) so that would not be something I would support.
Do you have safety concerns and need your gun in Netherlands?
The guns I own are all at my american house due to limitations to my freedoms int he Netherlands sadly. But yes, yes I do have safety concerns personally. And frankly anyone can get mugged, knifed or killed so again, would be responsible for everyone to carry one if it were legal.